Mechanical fastener



FIG. 1 is a front perspective view of a mechanical fastener, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a bottom view thereof, the top view being a mirror image of the bottom view shown; and,

FIG. 5 is a right side view thereof, the left side view being a mirror image of the right side view.

In the drawings, the phantom line that surrounds the design forms no part of the claimed design. The stipple pattern in FIGS. 1 and 2 represents male or female mechanical fastening elements selected from the group consisting of hooks, stems, and loops. Mechanical fastening elements are shown in broken lines in FIGS. 4 and 5 and form no part of the claimed design. 

CLAIM The ornamental design for a mechanical fastener, as shown and described. 